GE IS200VAICH1A MKVI, VME Analog Input Card

الوصف

The GE IS200VAICH1A is a VME Analog Input Card for the Mark VI series of GE’s Speedtronic Gas Turbine Control Systems. The board, often referred to as a VAIC (VME Analog Input/Output Control) board, is a key component that handles both analog inputs and outputs, acting as a crucial interface between the turbine’s sensors and the main control system.

Key Features and Functionality

The IS200VAICH1A is designed to provide robust and reliable analog signal processing in industrial environments. Here’s a breakdown of its primary functions:

• Analog Input and Output: This board is an Analog I/O board, capable of accepting 20 analog inputs and controlling 4 analog outputs. The inputs can come from a variety of sensors measuring critical turbine parameters like temperature, pressure, and flow. The outputs, typically 4-20 mA or 0-200 mA, are used to drive devices like actuators and control valves.
• Signal Conversion: The board converts incoming analog signals into digital values using a 16-bit A/D converter, which are then sent to the main controller. For outputs, it performs the reverse process, converting digital values from the controller into analog currents to drive field devices.
• TMR Support: The IS200VAICH1A supports both Simplex and TMR (Triple Modular Redundancy) systems. In a TMR setup, the input signals from the terminal board are fanned out to three separate VAIC boards, each located in a different VME rack. This redundancy ensures that the system can continue to operate even if one of the boards fails, providing enhanced safety and reliability.
• Robust Design: Like other boards in the Mark VI series, the IS200VAICH1A is built to withstand harsh industrial conditions. The circuit board is protected by a conformal coating to guard against environmental factors like moisture, dust, and chemical contaminants.
• Diagnostics: The board’s faceplate features three LED indicators to display its status: RUN (flashing green), FAIL (solid red), and STATUS (flashing orange for diagnostic alerts). The board also performs several diagnostic tests, including hardware and system limit checks, to monitor for faults and potential issues.

Technical Specifications